I am finishing up a bare metal installation of freeSBC and I am stuck on the network device configuration. The bare metal server is a Dell Power Edge R201 II with 2 GBE interfaces. One interface (the one that is running the SBC configuration wizard) is pre-selected as mtmg and the other one does not have an option for LAN/WAN. clicking on the "+" next to the interface shows

I am having a very difficult time trying to find a NIC to add to my Dell server (PCIe X 16 G2) with the specific chipset. For example I found a NIC with the 82540 chipset but not the 82540*EM* chipset. Can anyone recommend a compatible NIC I can use with a copper wire based network?

I have searched for the 82540 Gigabit Ethernet Controller and seems they come in two modes: EM and EP. The only difference I found between the two is the EP one can run below 0 degrees Celsius and is probably more expensive. When they do not specify EM or EP, it should be the EM one.